

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 16 | 9 | 38 | 0 | 1 | 64 |
| 1970 | 0 | 3 | 19 | 0 | 0 | 22 |
| 1971 | 3 | 0 | 4 | 0 | 0 | 7 |
| 1972 | 1 | 0 | 1 | 0 | 0 | 2 |
| 1973 | 0 | 2 | 8 | 0 | 0 | 10 |
| 1974 | 0 | 5 | 6 | 0 | 0 | 11 |
| 1975 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1976 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1977 | 2 | 0 | 7 | 0 | 0 | 9 |
| 1978 | 1 | 3 | 10 | 0 | 0 | 14 |
| 1979 | 0 | 2 | 19 | 0 | 0 | 21 |
| 1980 | 1 | 6 | 8 | 0 | 0 | 15 |
| 1981 | 3 | 1 | 3 | 0 | 0 | 7 |
| 1982 | 1 | 1 | 2 | 0 | 0 | 4 |
| 1983 | 0 | 2 | 8 | 0 | 0 | 10 |
| 1984 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1985 | 2 | 7 | 10 | 0 | 1 | 20 |
| 1986 | 5 | 7 | 18 | 0 | 1 | 31 |
| 1987 | 11 | 1 | 15 | 0 | 1 | 28 |
| 1988 | 6 | 12 | 16 | 0 | 2 | 36 |
| 1989 | 23 | 13 | 51 | 1 | 1 | 89 |
| 1990 | 36 | 45 | 88 | 0 | 0 | 169 |
| 1991 | 24 | 54 | 134 | 0 | 0 | 212 |
| 1992 | 102 | 58 | 128 | 0 | 0 | 288 |
| 1993 | 84 | 129 | 215 | 0 | 0 | 428 |
| 1994 | 55 | 125 | 139 | 0 | 0 | 319 |
| 1995 | 49 | 138 | 193 | 0 | 0 | 380 |
| 1996 | 55 | 138 | 194 | 0 | 1 | 388 |
| 1997 | 30 | 99 | 137 | 0 | 1 | 267 |
| 1998 | 56 | 63 | 91 | 0 | 0 | 210 |
| 1999 | 10 | 47 | 74 | 0 | 0 | 131 |
| 2000 | 14 | 22 | 76 | 0 | 0 | 112 |
| 2001 | 18 | 30 | 85 | 0 | 3 | 136 |
| 2002 | 8 | 29 | 61 | 0 | 1 | 99 |
| 2003 | 22 | 7 | 89 | 0 | 1 | 119 |
| 2004 | 34 | 20 | 54 | 0 | 0 | 108 |
| 2005 | 27 | 22 | 90 | 0 | 0 | 139 |
| 2006 | 14 | 9 | 79 | 0 | 0 | 102 |
| 2007 | 46 | 2 | 57 | 0 | 0 | 105 |
| 2008 | 23 | 10 | 109 | 0 | 0 | 142 |
| 2009 | 12 | 13 | 153 | 0 | 0 | 178 |
| 2010 | 10 | 41 | 124 | 0 | 0 | 175 |
| 2011 | 6 | 8 | 34 | 0 | 0 | 48 |
| 2012 | 1 | 6 | 24 | 0 | 0 | 31 |
| 2013 | 4 | 6 | 24 | 0 | 0 | 34 |
| 2014 | 50 | 5 | 49 | 0 | 0 | 104 |
| 2015 | 5 | 24 | 27 | 0 | 0 | 56 |
| 2016 | 14 | 18 | 37 | 0 | 0 | 69 |
| 2017 | 10 | 13 | 50 | 0 | 0 | 73 |
| 2018 | 3 | 10 | 37 | 0 | 0 | 50 |
| 2019 | 11 | 12 | 46 | 0 | 0 | 69 |
| 2020 | 5 | 10 | 38 | 0 | 0 | 53 |
| 2021 | 15 | 9 | 47 | 0 | 0 | 71 |
| 2022 | 5 | 10 | 52 | 0 | 0 | 67 |
| 2023 | 3 | 5 | 38 | 0 | 0 | 46 |
| 2024 | 4 | 11 | 44 | 0 | 0 | 59 |
| 2025 | 4 | 6 | 4 | 0 | 0 | 14 |
| Total | 944 | 1331 | 3175 | 1 | 14 | 5465 |